Obot 0.21.1 through 0.24.1 Authorization Bypass via /mcp-connect-composite/ Route
Priority LOW 39CWE-863Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-863.
Summary
Obot 0.21.1 through 0.24.1 contains an authorization bypass vulnerability that allows authenticated users to reach MCP servers because the checkUI deny list omits the /mcp-connect-composite/ route. Basic-role users with a composite MCP ID can proxy requests through mcpGateway.Proxy to invoke tools on MCP servers restricted by Access Control Rules.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00221 12th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| obot-platform | obot | 0.21.1 – 0.24.1 | — | No fix listed | CNA |
- obot Vendorobot-platform Affected 0.21.1 – 0.24.1 Fixed in — No fix listed CNA
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-103758
- 2026-10-03 Alias added: GHSA-x6jv-4hp7-3vj9
References
More obot-platform vulnerabilities
- TI-2026-65117 obot before v0.21.1 Authorization Bypass via /mcp-connect CVSS 4.0CRITICAL 9.3
- TI-2026-65098 Obot Quickstart Docker Deployment Unauthenticated Admin Access CVSS 4.0CRITICAL 9.3
- TI-2026-65095 Obot before v0.23.0 Authentication Bypass via OAuth Dynamic Client Registration CVSS 4.0HIGH 8.7
- TI-2026-79161 Authentication bypass in Obot CLI login exposes API keys CVSS 4.0HIGH 8.6
- TI-2026-65097 Obot before v0.23.0 Server-Side Request Forgery via MCP CVSS 4.0HIGH 8.3
- TI-2026-65096 Obot before v0.23.0 Authentication Bypass via Registry API CVSS 4.0MEDIUM 6.9
Sources
- CVE-2026-103758 · CVE Program
- CVE-2026-103758 · NVD
- FIRST EPSS
- GHSA-x6jv-4hp7-3vj9 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences